Pattern Evidence

Question 1

Footwear or tire marks can help us determine:
_____ the crime occured.
______ of people/vehiculs present.
_______ of their travels (before, during and after)
Whether a person was _______.
And connect to other ______.

Answer 1

Where
number
direction
on foot
crime scenes

Question 2

Pattern evidence can be class characteristics because...
But also individual characteristics because...

Answer 2

processed by manufacturers and thus all resemble one another.

Unique wear of the shoe.

Question 3

Explain how the wear of the shoe can be evidence by naming the types of wear?

Answer 3

Wear pattern (how someone walks), the position of the tread wear, wear condition, depth of the wear, major damage, and destruction. 
Thus, we can link a print to a specific shoe.

Question 4

What are the three types of patterns?

Answer 4

Visible:
transfer of material

Plastic:
3D

Latent: not visible without powders, chemicals, alternate light source.

Question 5

What is the first step to preserving a pattern?

Answer 5

photograph

Question 6

If the pattern cannot be brought to the lab…

A thin layer of dust or dirt will use _____ or _____ or _____ development.

Answer 6

Adhesive lifter
gelatine lifter
chemical

Question 7

We can also use when the pattern is a small layer of dust, an ______ lifter. Which uses electrical charges to transfer the print onto a black film. This can cover surfaces up to ___ feet long.

Answer 7

electrostatic

40

Question 8

Casting impressions is best for ____ print. It works on ___, ___, etc.

Answer 8

patent

soil, snow

Question 9

What are the 5 steps to casting a print?

Answer 9

1- spray aerosol on the print
2- dental stone is prepared
3- mix the mixture
4- spoon to disperse the flow
5- dry 24-48h

Question 10

What happens if the comparison item is not available?

Answer 10

database to identify make, model, brand, etc.